tools: nfdc route remove command

refs #3866

Change-Id: Iffbcf3face8758a52d35a854408f9910f4ba6c0b
diff --git a/docs/manpages/nfdc-route.rst b/docs/manpages/nfdc-route.rst
index 7b01c44..0c2f0e0 100644
--- a/docs/manpages/nfdc-route.rst
+++ b/docs/manpages/nfdc-route.rst
@@ -27,7 +27,7 @@
 it is updated with the specified cost, route inheritance flags, and expiration period.
 This command returns when the request has been accepted, but does not wait for RIB update completion.
 
-The **nfdc unregister** command removes a route with matching prefix, nexthop, and origin.
+The **nfdc route remove** command removes a route with matching prefix, nexthop, and origin.
 
 OPTIONS
 -------
@@ -40,7 +40,8 @@
 
 <FACEURI>
     An URI representing the remote endpoint of a face.
-    It must uniquely match an existing face.
+    In **nfdc route add** command, it must uniquely match an existing face.
+    In **nfdc route remove** command, it must match one or more existing faces.
 
 <ORIGIN>
     Origin of the route, i.e. who is announcing the route.
@@ -70,9 +71,9 @@
 
 2: Malformed command line
 
-3: Face not found (**nfdc route add** only)
+3: Face not found
 
-4: FaceUri canonization failed (**nfdc route add** only)
+4: FaceUri canonization failed
 
 5: Ambiguous: multiple matching faces are found (**nfdc route add** only)